... the engine model parameters is independently verified by successful estimation of parameters by nonlinear least-squares estimation. 22 12 2009 26 03 2010 24 08 2010 24 08 2010 fault diagnosis jet engines least squares approximations parameter estimation wavelet transforms...

... 2009 23 05 2009 26 04 2010 26 04 2010 fuel systems ignition intake systems (machines) manifolds parameter estimation petroleum thermal analysis valves Over 80% of the total CO and HC emissions in standard driving cycles are generated during the cold phase when cars...

... damping machine bearings parameter estimation rotors Squeeze film dampers provide structural isolation, reduce imbalance response amplitude levels in rotating machinery, and in some instances, increase rotor speed stability thresholds. SFDs are common in aircraft gas turbine engines and in some...

... elastic constants Hilbert transforms parameter estimation shock absorbers vibrations Traditional rotor-bearing systems use oil based bearing support dampers to mitigate imbalance response and rotordynamic stability ( 1 2 ). With a careful design, squeeze film dampers (SFDs) can provide large...

...-4795 ,” 126 ( 4 ), pp. 888 – 894 . 13 06 2006 01 08 2006 magnetic forces magnetic bearings parameter estimation magnetic flux magnetic variables measurement damping elastic constants testing One of the most attractive features of mechatronics is its ability...

... of Eq. 3 , x ⃑ = H # z ⃑ , is also the best in a least-squares sense. 25 08 2005 28 09 2005 gas turbines engines compressors parameter estimation shafts bar charts sensitivity analysis Thermodynamic models and computer software for gas turbine...

... degradation as percentages of the degradation at the final time. Health parameter Estimation error (%) Unconstrained Constrained Fan airflow 4.81 4.41 Fan efficiency 5.85 4.60 Compressor airflow 3.43 2.73 Compressor efficiency 4.82 3.80 HPT airflow 3.09...

...-38518. Manuscript received by IGTI, October 2002, final revision, March 2003. Associate Editor: H. R. Simmons. 16 June 2003 01 October 2002 01 March 2003 09 02 2005 gas turbines condition monitoring fault diagnosis parameter estimation nonlinear estimation...

... 11 08 2004 rotors modal analysis parameter estimation calibration vibration measurement Balancing of flexible rotors has acquired the attention of many researchers since the days of Thearle 1 . The main balancing techniques are the influence coefficient method, 2...

... been reviewed by Edwards et al. 10 . turbogenerators vibration measurement parameter estimation state estimation machine bearings 03 June 2002 01 Dec 2001 01 Mar 2002 07 06 2004 Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN...

... June 2002 01 Dec 2001 01 Mar 2002 07 06 2004 fatigue cracks crystals superalloys nickel stress effects slip crystallographic shear parameter estimation X-ray crystallography crystal structure High cycle fatigue (HCF) is one of the major causes of component...

... coefficients at a constant rotor speed is useful to assess rotor-bearing system stability. 01 10 2002 01 03 2003 machine bearings rotors transient response damping parameter estimation supports Experimental identification of fluid film bearing parameters is essential for adequate...

... 2002 01 03 2003 machine bearings rotors supports dynamic response hydrodynamics damping parameter estimation The identification of bearing parameters is traditionally confined to laboratory environments, which rarely present the same operating characteristics as in actual...

.... 01 Nov 2000 01 May 2002 27 12 2002 vibrations modal analysis parameter estimation gas turbines rotors bending numerical analysis The evaluation of the vibration behavior of gas turbine installations where the rotor support structure or casing has natural frequencies...

.... stators aerospace engines sliding friction damping mechanical contact mechanical testing parameter estimation modelling 04 June 2001 01 Dec 2000 01 Mar 2001 24 09 2002 Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL...

...-centres internal combustion engines testing combustion emission pressure imaging parameter estimation Heavy-duty turbocharged aftercooled (HDTCA) engines met EURO III emission regulations in 1999 incorporating the following technologies ( 1 2 3 ): • Four valve cylinder head...

... modelling parameter estimation probability perturbation theory The high sensitivity of both the free and forced responses of bladed disks to mistuning, i.e., to the existence of small blade-to-blade differences in their structural properties that arise for example during the manufacturing process...

... received by the ASME Headquarters June 9, 1999. Editor: H. D. Nelson. 04 May 1999 09 June 1999 rotors turbines vibrations vibrational modes modal analysis identification parameter estimation frequency response elasticity mass In regards to the maximum likelihood (ML...

... vibrations vibrational modes modal analysis identification parameter estimation frequency response elasticity mass A large number of investigations have focused, in the last thirty years, on the assessment of the effects of mistuning, i.e., small blade-to-blade variations of their mechanical...